Stainless steel passivating method and used mixed solution

A mixed solution and stainless steel technology, which is applied in the coating process of metal materials, etc., can solve the problems of reduced pollution, atmospheric and pickling environmental pollution, and reduced storage difficulty of sulfuric acid and solid nitrate.

Inactive Publication Date: 2014-05-28
PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at solving the above-mentioned problems such as serious pollution to the atmosphere and pickling environment, and difficult storage, a method for passivating stainless steel and a mixed solution used are provided. The mixed solution uses sulfuric acid and solid nitrate to passivate stain

Method used

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  • Stainless steel passivating method and used mixed solution
  • Stainless steel passivating method and used mixed solution
  • Stainless steel passivating method and used mixed solution

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Embodiment Construction

[0017] A flowchart of a method of passivating stainless steel according to an exemplary embodiment of the present invention will be described with reference to process drawings. In the exemplary embodiment, taking the dipping method as an example, various embodiments in which the mixed solution according to the present invention is used to passivate the stainless steel plate are described to illustrate the characteristics and other advantages of the present invention.

[0018] figure 1 Is a flowchart of a method for passivating stainless steel according to an embodiment of the present invention, figure 2 It is a schematic diagram of a passivation stainless steel process according to an embodiment of the present invention.

[0019] in figure 1 In the process of framing, alkaline washing, passivation, clean water washing, hot water washing, drying and unframing of the stainless steel plate, the treatment of stainless steel is completed. The framing is the step of fixing the stainless

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Abstract

The invention provides a stainless steel passivating method for passivating stainless steel by adopting a mixed solution of sulfuric acid and nitrate. The mixed solution contains the sulfuric acid with the mass percent of 0.45% to 2.7% and 45g/L to 70g/L of NaNO3 or KNO3. The mixed solution is easy to store and low in pollution level, the surface of the stainless steel passivated with the stainless steel passivating method is attractive in appearance, and the effect which is the same as the effect of pure nitric acid passivation can be realized.

Description

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Claims

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Application Information

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Owner PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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